Just restore it from new and they won't know. I did it to this iPhone here was jailbroken and restored it they gave me another brand new phone. So as long as ya don't have any files on there you will be good.

Just restore it from new and they won't know. I did it to this iPhone here was jailbroken and restored it they gave me another brand new phone. So as long as ya don't have any files on there you will be good.

But I heard some ppl said they got a way to trace that wheater our device has been jailbreak or not